The 1971 Floppy disk
(Floppy disk picture(thank you Mr King))
The floppy disk got its name from how flexible it was as it was covered in a flexible plastic coating. It was an alternative to buying the then expensive hard drives. It started at 8 inch and it could hold up to 800 kilobytes. In 1976 it was downsized to 5 1/4 inch in order to fit in the desktop computer at Wang Laboratories. There were 10 manufactures of 5 1/4 inch floppy disk that could hold 1.2 megabytes by 1978. It was downsized again to 3 1/2 inch in 1981 by Sony and encased in hard plastic. It could store between 400 KB and 1.44 MB depending on the density. It works like a record or a cassette tape, spinning included. One or both sides of the disks are used for recording data, which it can do instantly, or whatever else it was needed for. (Floppy disks diagram)
(Floppy disk picture(thank you Mr King))
The floppy disk got its name from how flexible it was as it was covered in a flexible plastic coating. It was an alternative to buying the then expensive hard drives. It started at 8 inch and it could hold up to 800 kilobytes. In 1976 it was downsized to 5 1/4 inch in order to fit in the desktop computer at Wang Laboratories. There were 10 manufactures of 5 1/4 inch floppy disk that could hold 1.2 megabytes by 1978. It was downsized again to 3 1/2 inch in 1981 by Sony and encased in hard plastic. It could store between 400 KB and 1.44 MB depending on the density. It works like a record or a cassette tape, spinning included. One or both sides of the disks are used for recording data, which it can do instantly, or whatever else it was needed for.
Links
http://inventors.about.com/od/computersandinternet/a/FloppyDisk.htm
https://www.reference.com/technology/much-memory-can-floppy-disk-hold-998d8cfd3bd9b60c
http://computer.howstuffworks.com/floppy-disk-drive2.htm
http://www.computerhope.com/jargon/f/floppydi.htm
http://study.com/academy/lesson/what-is-floppy-disk-definition-advantages-disadvantages.htm
Muti choice
When was the 3 1/2 inch disk made?
1982
1987
1981
1899
Why was the Floppy disk made?
It was the best as storing data
It was cheaper then the hard drives
It would not crash
None of them